Skip to content

OpenVRTessellatedBoxSource

Repository source: OpenVRTessellatedBoxSource

Description

VTK + OpenVR TessellatedBoxSource example.

Note that for the interactions to work in VTK >= 9.1, you will have to copy the .json manifest files from the subfolder Rendering/OpenVR in VTK's source to the working directory in which the tests are run!

Question

If you have a question about this example, please use the VTK Discourse Forum

Code

OpenVRTessellatedBoxSource.cxx

#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkDataSetMapper.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkOpenVRRenderWindow.h>
#include <vtkOpenVRRenderWindowInteractor.h>
#include <vtkOpenVRRenderer.h>
#include <vtkProperty.h>
#include <vtkShrinkFilter.h>
#include <vtkTessellatedBoxSource.h>

int main(int /* argc */, char* /* argv */[])
{
  double bounds[6];
  bounds[0] = -10.0;
  bounds[1] = 10.0;
  bounds[2] = 10.0;
  bounds[3] = 20.0;
  bounds[4] = -5.0;
  bounds[5] = 5.0;

  vtkNew<vtkTessellatedBoxSource> boxSource;
  boxSource->SetLevel(3);
  boxSource->QuadsOn();
  boxSource->SetBounds(bounds);
  boxSource->SetOutputPointsPrecision(vtkAlgorithm::SINGLE_PRECISION);

  vtkNew<vtkShrinkFilter> shrink;
  shrink->SetInputConnection(boxSource->GetOutputPort());
  shrink->SetShrinkFactor(.8);

  // Create a mapper and actor
  vtkNew<vtkNamedColors> colors;

  vtkNew<vtkDataSetMapper> mapper;
  mapper->SetInputConnection(shrink->GetOutputPort());

  vtkNew<vtkProperty> back;
  back->SetColor(colors->GetColor3d("Tomato").GetData());

  vtkNew<vtkActor> actor;
  actor->SetMapper(mapper);
  actor->GetProperty()->EdgeVisibilityOn();
  actor->GetProperty()->SetColor(colors->GetColor3d("Banana").GetData());
  actor->SetBackfaceProperty(back);

  // Create a renderer, render window, and interactor
  vtkNew<vtkOpenVRRenderer> renderer;
  vtkNew<vtkOpenVRRenderWindow> renderWindow;
  renderWindow->Initialize();
  renderWindow->AddRenderer(renderer);
  renderWindow->SetWindowName("OpenVRTessellatedBoxSource");
  vtkNew<vtkOpenVRRenderWindowInteractor> renderWindowInteractor;
  renderWindowInteractor->SetRenderWindow(renderWindow);

  // Add the actors to the scene
  renderer->AddActor(actor);
  renderer->SetBackground(colors->GetColor3d("Silver").GetData());

  renderer->ResetCamera();
  renderer->GetActiveCamera()->Azimuth(30);
  renderer->GetActiveCamera()->Elevation(30);
  renderer->ResetCameraClippingRange();

  // Render and interact
  renderWindow->SetSize(640, 480);
  renderWindow->Render();
  renderWindowInteractor->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(OpenVRTessellatedBoxSource)

find_package(VTK COMPONENTS 
  CommonColor
  CommonCore
  FiltersGeneral
  FiltersSources
  InteractionStyle
  RenderingContextOpenGL2
  RenderingCore
  RenderingFreeType
  RenderingGL2PSOpenGL2
  RenderingOpenGL2
  RenderingOpenVR
)

if (NOT VTK_FOUND)
  message(FATAL_ERROR "OpenVRTessellatedBoxSource: Unable to find the VTK build folder.")
endif()

# Prevent a "command line is too long" failure in Windows.
set(CMAKE_NINJA_FORCE_RESPONSE_FILE "ON" CACHE BOOL "Force Ninja to use response files.")
add_executable(OpenVRTessellatedBoxSource MACOSX_BUNDLE OpenVRTessellatedBoxSource.cxx )
  target_link_libraries(OpenVRTessellatedBoxSource PRIVATE ${VTK_LIBRARIES}
)
# vtk_module_autoinit is needed
vtk_module_autoinit(
  TARGETS OpenVRTessellatedBoxSource
  MODULES ${VTK_LIBRARIES}
)

Download and Build OpenVRTessellatedBoxSource

Click here to download OpenVRTessellatedBoxSource and its CMakeLists.txt file. Once the tarball OpenVRTessellatedBoxSource.tar has been downloaded and extracted,

cd OpenVRTessellatedBoxSource/build

If VTK is installed:

cmake ..

If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:

cmake -DVTK_DIR:PATH=/home/me/vtk_build ..

Build the project:

make

and run it:

./OpenVRTessellatedBoxSource

WINDOWS USERS

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.